Gas-mixer



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GAS MIXER. No 507,013. Patented 001;. 1'7, 1893.

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STATES PATENT ()FFIQE.

CLARENCE M. KEMP AND CHARLES E. KEMP, OF BALTIMORE, MARYLAND GAS-MIXER.

SPECIFICATION forming part of Letters Patent No. 507,013, dated October17, 1893. Application filed May 9. 1893. Serial No. 473,499. (No model.)

To all whom it may concern:

Be it known that we, OLARENcE M. KEMP and CHARLES E. KEMP, both of thecity of Baltimore and State of Maryland, have invented certainImprovements in Gas-Mixers, of which the following is a specification.

This invention relates to certain improvements in a gas mixerwhereby airand the vapor of some light hydrocarbon, or any two gases, admittedthereto in preferably known proportions, are mixed, and the mixtureforced therefrom, as will hereinafter fully appear.

In the further description of the said invention which follows,reference is made to the accompanying drawings forming a part hereof,and in which Figure 1 is a partly sectional side view of the improvedapparatus, and Fig. 2 a top View of the same with certain parts thereofbroken away to show other parts underneath. Figs. 3 to 7 inclusive, areenlarged details of the apparatus, hereinafter described.

Referring to the drawings, A represents a tank having a bottom a, andabove it a false bottom b. The space between the true and false bottoms,a and b, is divided by a partition 0 into the compartments d and e.

B and C are standing pipescthe lower ends of which are secured in thefalse bottom I). These pipes extend to a point above a certain waterline hereinafter alluded to, and

serve to place the compartments (1 and 6, respectively, in communicationwith the interior of the tank A. The upper edge of the tank A isflanged, and to this flange is secured a conical flanged top D having acentral openingf.

E is a rod placed centrally of the tank, and it extends from the falsebottom I) to the opening f where it is supported by a perforated plateg.

F is a hood adapted to slide on the central rod E, into which the gasesto be mixed are introduced, as hereinafter described.

To the top of the hood F is secured a clamp collar j having an eye Itextending from one side. Through this eye is inserted a rod G,

the upper end of which is inserted in a shaft on partially inolosed in abox at attached to the outside of the tank A. The wall of the tank isslotted where the rod G passes through it to allow of the vibratorymotion of the rod as the hood is moved up and down in the operation ofthe apparatus.

The gases to be mixed are introduced to the compartment (1 between thetrue and false bottoms, through an exterior channel 0 having at itsupper end a valve chest containing valve mechanism and other attachmentshereinafter described, and pass thence through the pipe B to theinterior of the hood. The mixed gases pass down the stand pipe C to thecompartment 6 and thence to the delivery pipe H.

I is the valve chest before alluded to, attached in any suitable mannerto the upper end of the channel 0. Fig. 5 is a top view of this chestand its immediate connections without its top or cover, on an enlargedscale. A sectional side view of this chest, on an enlarged scale, andtaken on the dotted line woc, Fig. 5, is shown in Fig. 3 and a crosssection on the dotted line y-y, in Fig. 4.

The bottom of the valve chest which is denoted by 19, has two ports qand 0' therein. Under the ports q and 'r, and in communicationtherewith, are nozzles J and K, and into these are screwed the pipes Land M for the introduction of the gases to be mixed.

On the valve face which is the upper surface of the bottom p of thevalve chest I, is

situated a slide valve N with one ports therein and the valve is held inplace by the bar 0 which rests on the projections tand u. The ends ofthis bar 0, rest in slotted lugs '11 and w on the surface of the valveface. The lifting of the bar 0 is prevented by the cover P of the valvechest which is nearly in contact with the upper end of the lugs 'v and wand the upper edge of the bar G.

Q is a box cast as a part of the valve chest cover P, having a plug ascrewed into one side thereof, and through this plug is passed a shaft bthe inner end of which has an arm a for operating the valve N. The lowerend of the arm 0 has a pin d which rests between the lugs e and f on theupper surface of the valve N. The said arm has also stops g and h one ofwhich, as the arm is moved over in either direction, strikes the side ofthe box Q, and limits its swinging movement.

R is a plate havingahub 3', adapted to vibrate on a projecting part ofthe plug a. This plate has a recess is in one side, and in the upper andlower ends of the recess are hooks Z and m. The shaft m before alludedto as having its end inclosed in the box at, has an arm n with a roller0 adapted to turn on a pin 19 at its end. This roller is situated in therecess is in the vibratory plate R, see Figs. 1 and 2. The plate hasalso an arm S with a weight g at its end, and two tappets r and s forthe purpose hereinafter described. The shaft b has an upwardly extendingarm T, and downwardly projecting arm U. The arm T is in such position asto be struck by thetappets r and s when the plate R is vibrated by theroller 0' of the arm n striking either hook Z and m, and the armUhasapaddle or fanVwhich is situated in a box W containing water.

Z is a float on the lower edge of the paddle V.

A is an oil cup in the top of the box Q whereby oil is introduced tolubricate the valve N. The valve 1/. of the oil cup opens inward, andits stem is of such length, that when the cap 12 is screwed down thevalve is slightly opened which allows oil to pass to the chest. When thecap is taken 0% the spring to seats the valve and prevents escape ofgas.

The oil cup is shown on an enlarged scale in Fig. 7.

To prepare the apparatus for use, the tank is supplied with water to aheight indicated by the dotted line 2', and certain valves not shown inthe pipes L and M opened. Supposing the hood F to be in its lowestposition as shown in Fig. 1, the gases, in proportions governed by thesizes of the pipes L and M, the openings in the valves in the pipes, andthe respective pressures of the gases, pass through the valve N into thechest I and down the channel 0 to the compartment (1 under the falsebottom I). They then pass upward through the stand pipe B into the hoodF, and down through the stand pipe C to the compartment e and thenthence to the delivery pipe H. At the same time, the hood rises. Thegases are thoroughly mixed in taking the circuitous passage describedand indicated by the arrows in Fig. 1. As the hood rises the arm n withits roller 0' depresses the lower hook m of the plate R, and raises theweighted arm S, until, when the hood has reached a desired high point,the weighted arm S is brought into a position beyond its center ofgravity from which it falls and the tappet r strikes the arm T, and thatdevice is thrown suddenly over which changes the position of the valveor closes it so that no more gas is admitted from either pipe. The

shock which would be occasioned by the reversal in position of theparts, as described, isreduced by the retarding influence of the waterin the box W acting on the paddle V. The float Z attached to the paddleV, by reason of its flotation, that is to say its tendency to risein'the water in the box W, serves to lock the arm U in either positionin which the said arm may be placed. The float may be integral with thepaddle, or attached thereto as shown. As the mixed gases are drawn 01f,the hood falls and in thismovement the upper hook Z of the plate R islifted until the hood reaches its low position, when the weighted arm Sfalls over in an opposite d1- rection thereby opening the valve N, andthe hood is again filled, as before'described. The

perforations in the plate 9 in the nozzle f allow of the escape of airfrom the tank as the hood rises.

-We claim as our invention- 1. 'In combination with a gas mixer havingtherein a vertically moving hood, a valve chest constructed to beapplied to the gas mixer, having suitable pipes whereby the gases to bemixed are introduced to the said chest, a passage leading from the saidchest to the mixer, a valve to control the admission of gases to theinterior of the chest, a box erected on the cover of the chest, a shaftconstructed to vibrate within a plug in the side of the box, having atits inner end an arm constructed to operate the said valve and at theother end an arm with a paddle, a float at the lower edge of the paddleand a box containing water in which the said float and a portion of thesaid paddle areimmersed, the said float serving as a lock to holdv thepaddle in either of its extreme positions in the box, and mechanism toconnect the said shaft with the hood of the mixer substantially asspecified.

2. The combination of a valve chest and a valve, means to actuate thevalve, a vessel containing water, and a paddle in the water having amotion derived from the valve operating mechanism, substantially asspecified.

3. The combination of a valve chest and a valve, means to actuate thevalve, a vessel containing water, a paddle having a motion derived fromthe valve operating mechanism, and a float whereby as the said valve ismoved,it is locked, substantially asspecified.

4:. The combination in a gas mixer, of a valve chest with a valvetherein, the said valve chest having a lid on which is mounted mechanismfor operating the said valve,which mechanism consists of a shaftconstructed to vibrate within a plug in the side of a box incommunication with the said chest, said shaft having at its inner end anarm constructed to operate the said valve, and at the other end an armwith a paddle, a float at the lower end of the paddle, and a boxcontaining water in which the said float is immersed, the said floatserving as a lock to hold the paddle in either of its extreme positions,in the box,substantially as specified.

CLARENCE M. KEMP. CHARLES E. KEMP. Witnesses:

JOHN S. COLE, W. RoBY PURNELL.

